Electricity is electricity, no matter where it comes from.

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A hybrid method of producing electricity is by combining two different fundamental forms of electrical production (though it’s really more energy conversion) and integrating them into the same system.

As a broad example, a hybrid solar/wind generator could be a windmill with solar panels covering the exterior of it or on the fins. Within a single generating unit, you are using two seperate energy sources to produce the electrical energy required.

A second example:

If you are aware of how a coal-fueled power plant produces power (if not google it!), you’ll know that the coal is burnt in order to heat up a liquid into a high-pressure vapour in order for it to pass through a turbine. Hybridization of this power production, could be to use existing heat from a geothermal site to pre-heat the liquid, before entering the coal-burning stage, therefore requiring less coal to be burnt in order to produce the same high-pressure vapour.

Hope this answered your query.